Bobbin-winding machine.



F. ASHWORTH.

BOBBIN WINDING MACHINE.

APPLICATION FILED 0CT.2I. I913.

Patented Jan. 28,1919.

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APPLICATION FILED 0CT.2l| I913.

Patented Jan. 28, 1919.

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F. ASHWORTH.

BOBBIN WINDING MACHINE.

- 7 APPLICATION FILED 0CT.2I| 1913. 1,292,560. v

Patented J an. 28, I919 3 SHEETS-SHEET 3- in: palm: "1n; cu. mlmonvno. Iwnnnmm n the various features of the invention in their UNITED STATES PATENT EEToE.

FRED ASI-IWORTH, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY IVIESNE ASSIGN- MENTS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A. CORPORATION OF NEW JERSEY.

BOBBIN-WINDING MACHINE.

Application filed October 21, 1913.

To all whom it may concern:

Be it known that I, FRED ASI-IWORTI-I, a

citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Bobbin-Winding Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

7 This invention relates to bobbin winding machines and more particularly to machines for winding the bobbins of sewing machine shuttles.

The object of the invention is to produce an improved bobbin winding machine by which bobbins of sewing machine shuttles may be wound quickly and efficiently and which requires very little skill or care on the part of the operator during the bobbin winding operation.

With this object in View, the invention comprises various novel and improved features set forth in the following description and particularly pointed out in the claims, the advantages of which will be obvious to those killed in the art.

In the accompanying drawings illustrating a bobbin winding machine embodying preferred forms, Figure 1 is a view in side elevation of the machlne, illustrating the parts in running positions, Fig. 2 1s a view in front elevation of the machine, Fig. 3

is a view in side elevation similar to Fig. 1, illustrating the parts in stopping positions, Fig. 4 is a sectional view taken substantially on the line 44 of Fig. 1, Fig. 5 is a sectional view taken substantially on the line 55 of Fig. 2, Fig. 6 is a detailed view illustrating particularly the clutch mecha nism for connecting the driving pulley with the bobbin winding shaft and showing the parts in running positions, and Fig. 7 is a view similar to Fig. 6 illustrating the parts in stopping positions.

In the bobbin-winding machine illustrated in the drawings the bobbin carrying or winding shaft indicated at 1 is journaled within a hollow shaft or sleeve 2 mounted to rotate in a bearing 3 formed in the arm of the bracket 4 adapted to be secured to Specification of Letters Patent.

Patented Jan. 28, 1919.

Serial No. 796,451.

on the end of the shaft. A disk 7 is attached to the bobbin carrying shaft by means of screws 8 threaded into bosses 9 extending outwardly from an enlargement at the left hand end of the shaft, Figs. 2 and 4, and said disk is provided with a spindle 10 adapted to receive the bobbin 11. A clamping disk 12 is threaded upon the outer end of the spindle 10 and the bobbin is clamped upon the spindle 10 between the disks 7 and 12. 13 indicates a sheet metal housing secured to the shaft 1 between the enlargement at the left hand end thereof and the disk 7 and this housing incloses certain parts hereinafter described.

The winding shaftis driven by means of a driving pulley 14 loosely mounted upon the winding shaft and provided with a pcripheral groove to receive a driving belt 15. i

In the construction illustrated the pulley 14 is attached by means of pins to an outwardly projecting flange 16 on the hollow shaft 2.

A clutch mechanism is provided for connecting the pulley 14 with the winding shaft and is arranged so that the pulley may be disconnected from the shaft when the winding operation has been completed. This clutch mechanism comprises a pawl 17 fixed to a shaft 18 mounted to turn in a bearing in the outer end of an arm 19 formed on the enlargement at the left hand end of the winding shaft, which is arranged to engage any one of a series of teeth 20 formed on the periphery of the flange 16. The pawl is held in engagement with one of the teeth 20 by means of a spring 21 attached at one end to an arm 22 of a bell crank lever fixed to the shaft 18, and at the other to a pin 23 mounted on the enlargement at the end of the bobbin carrying shaft. The bell crank lever has a second arm 24 provided with a series of teeth which mesh with teeth formed upon the outer end of an arm 25 attached to the end of a rod 26 extending centrally through the winding shaft. This rod means of a collar 27 secured to the end thereof. When the pawl 17 is engaged with one of the teeth 20, the winding shaft is driven by the driving pulley. During the winding of the bobbin the parts of the clutch mechanism are maintained substantially in the relative positions illustrated in Fig. 6, and the shaft 26 rotates with the winding shaft and driving pulley. A projection or lug 27 is formed on the collar 27 and the pawl 17 is disengaged from the contacting tooth 20 to disconnect the driving pulley from the winding shaft by interposing a stop in the path of the lug 27 and thereby arresting the rotation of the rod 26. This stop is indicated at 28 and is formed upon the outer end of a lever 29 fixed to a rock shaft 30. When the stop 28 is interposed in the path of the lug 27 the rotation of the shaft 26 and of the arm 25 is arrested. The winding shaft-is thereafter driven forward a small part of a rotation by the driving pulley, until, through the cotiperative action of the arms 24 and 25 the pawl 17 is thrown out of engagement with the contacting tooth 20, as shown in Fig. 7. In order to prevent recoil and the reengagement of the pawl 17 with one of the teeth 20, a recoil dog 31 is pivoted loosely on the shaft 30 and is arranged to engage one of a series of teeth 32 formed on the periphery of the collar 5. A

' pin 32 is secured in the lever 29 and projects in front of the dog 31 and the dog 31 is connected with the lever 29 by means of a spring 33secured at one end to an arm on the lever 29 and at the other to an arm. 34 formed integral with the dog 31. This connection between the lever 29 and the dog 31 enables the stop 28 and the dog to be thrown into and out of operative position together.

The machine is provided with mechanism controlled by the load upon the bobbin which acts to throw the stop 28 into the path of the lug 27 and thereby cause the driving pulley to be disconnected from the winding shaft when the bobbin is full of thread or when a predetermined amount of thread has been wound thereon. An arm 36 is secured to the rock shaft 30 and can ries a roll 37 at its outer end for engagement with the outer end of an arm 38 fixed to a rock shaft 39 mounted to turn in a bearing in a bracket 40. The outer end of the arm 38 is provided with a forward face 41 which is curvedin an arc struck from a center which lies substantially in the axis about which the arm 38 turns and with a cam face 42 which extends rearwardly from the face 41 and is sharply inclined to the face 41 in a direction toward the axis of the arm .38. The roll '37 is held in engagement with the outer end of the arm 38 by means of a coiled spring 43 attached at one end to the outer end of the arm 36 and at the other to a pin projecting from the bracket 40. A second arm 44 is secured to the rock shaft 39 and a curved sheet metal contact piece 45 is mounted upon the end of the arm 44 and arranged to lie between the flanges of the bobbin so as to engage the thread as it is wound on the bobbin. The inner end of the arm 44 is provided with a split socket to receive the shaft 39 and the arm is clamped to the shaft by means of a clamp screw 46. The connection between the arm 44 and the shaft enables the arm 44 to be adjusted angularly with relation to the arm 38.

Fig. 3 shows clearly the position of the parts when the winding shaft is disconnected from the driving pulley. After a bobbin has been placed upon the s indle 10, and clamped between the disks and 12, the arm 44 is seized by the operator and moved downwardly until the contact piece 45 engages the central portion or barrel of the bobbin. The downward movement of the arm 44 swings the arm 38 rearwardly and by the action of the cam face 42 on the roll 37 the arm 36 is swung downwardly thereby throwin the stop 28 out of the path of the lug 2 a and disengaging the dog 31 from the teeth 32 on the collar 5. When the stop 28 and dog 31 are thus thrown out of acting positions, the pawl 17 is immediately swung inwardly by the spring 21 to connect the driving pulley with the winding shaft. The parts are constructed and arranged so that when the contact piece 45 is engaged with the central portion of the bobbin, the roll 37 rests against the forward end of the curved face 41. The contact piece 45 engages the thread as it is wound upon the bobbin and assists in distrlbuting it evenly thereon. As the amount of thread upon the bobbin increases, the arm 44 is lifted and the arm 38 is swung forwardly until when the bobbin is full of thread or when a predetermined amount has been wound thereon, the roll 37 reaches the cam face 42. When this occurs, the spring 43 acts to swing the arm 36 upwardly thereby throwing the stop 28 into the path of the lug 27' and allowing the dog 31 toengage the teeth 32 to cause the disconnection of the driving pulley from the winding shaft. The contact of the roll 37 with the cam face 42 as the arm 36 turns upwardly swings the arm 38 forwardly and illfts the contact piece 45 from between the side flanges of the bobbin so that the bobbin can be easily removed. It is obvioils that by adjusting the angular relation of the arms 44 and 38 or by changing the form of the contact piece 45, the action of the machine may be regulated so that the winding shaft will be disconnected from the ClllVlllg pulley when any predetermined amount of thread has been wound on the bobbin.

Having explained the nature and object of the invention and having described a machine embodying the various features thereof in their preferred forms, what is claimed is:

1. A bobbin winding machine, having, in combination, a winding shaft member, a driving member mounted to rotate coaxially with the winding shaft member, a clutch dog movably mounted on one of said members for engagement with an abutment carried by the other member to establish a driving connection between the driving member and the shaft member, and means acting automatically to move the clutch dog relatively to the member on which it is mounted out of operative engagement with the abutment to disconnect the driving member from the shaft member when a predetermined amount of thread has been wound on the bobbin.

2. A bobbin winding machine, having, in combination, a winding shaft, a driving member mounted to rotate co-axially with the winding shaft, a clutch dog movably mounted on the shaft for engagement with the driving member to establish a driving connection between the driving member and the shaft, a projection operatively connected with the clutch dog, a normally inactive stop dog for engaging the projection to stop the rotation thereof and thereby move the clutch dog out of operative engagement with the driving member, and means acting automatically to move the stop dog into active position when a predetermined amount of thread has been wound on the bobbin.

3. A bobbin winding machine, having, in combination, a winding shaft member, a driving member mounted to rotate co-axially with the winding shaft member, a clutch dog movably mounted on one of said members for engagement with an abutment carried by the other member to establish a driving connection between the driving member and the shaft member, an arm arranged to engage the thread on the bobbin, and mechanism controlled from the arm for moving the clutch dog relatively to the member on which it is mounted out of operative engagement with the abutment to disconnect the driving member from the shaft member when a predetermined amount of thread has been wound on the bobbin.

4. A bobbin winding machine, having in combination, a winding shaft, a driving member mounted to rotate coaxially with the shaft and having a tooth, a pivoted clutch dog mounted on said shaft for engagement with said tooth to connect the driving member with the shaft, a normally inactive stop dog for causing the disengagement of the clutch dog from said toothto disconnect the driving member from the shaft, and means acting automatically to move said stop dog into active position when a predetermined amount of thread has been wound on the bobbin.

5. A bobbin winding machine, having in combination, a winding shaft, a driving member mounted to rotate coaxially wit the shaft and having a tooth, a clutch dog pivoted on the shaft for engagement with the tooth on the driving member, a device for controlling the engagement of the dog with the tooth normally rotating with the shaft, a normally inactive stop dog for arresting the rotation of said device to cause the disengagement of the clutch dog from said tooth to disconnect the shaft from the driving member and means acting automatically to throw the stop dog into active posi tion when a predetermined amount of thread has been wound on the bobbin.

6. A bobbin winding machine, having in combination, a winding shaft, a drivin pulley mounted to rotate coaxially wit the shaft, a tooth mounted thereon, a pivoted clutch dog carried by the shaft for engagement with said tooth to connect the driving pulley with the shaft, a pivot stud for said og, a toothed arm fixed to said stud, a second toothed arm pivoted coaxially with the shaft the teeth of which mesh with the teeth of said first arm, a stop for arresting the rotation of the second arm and thereby causing the disengagement of the clutch dog from the tooth on the driving pulley, and means controlled by the load on the bobbin for throwing said stop into action when a predetermined amount of thread has been wound on the bobbin.

7 A bobbin winding machine, having, in combination, a winding shaft, a driving member mounted to rotate oo-axially with the winding shaft, a clutch dog movably mounted on the shaft for engagement withthe driving member to establish a driving connection between the driving member and the shaft, a projection operatively connected with the clutch dog, a normally inactive stop dog for engaging the projection to stop the rotation thereof and thereby move the clutch dog out of operative engagement with the driving member, an arm arranged to engage the thread on the bobbin, and mechanism controlled, from the arm for throwing the stop dog into active position when a predetermined amount of thread has been wound on the bobbin.

8. A bobbin winding machine, having in combination, 'a winding shaft, a rotary driving pulley for rotating the winding shaft, a clutch for connecting the driving pulley with the' winding shaft, comprising relatively rotatable parts, a stop for arresting the rotation of one of said parts to cause the disconnection of the members of the clutch, a lever on which said stop is carried, a roll mounted thereon, a pivoted arm having a curved face substantially concentric with the arc in which the end of the arm swings for engagement with the roll to maintain the stop out of acting position and with a cam face, means for actuating the lever to throw the stop into acting position when the roll arrives at the cam face on said arm, a second arm connected with the first arm to swing therewith, and a contactpiece for engagement with the thread on the bobbin carried by the second arm.

9. A bobbin winding machine, having in combination, a winding shaft, driving mechanism for driving the winding shaft, means for disconnecting the driving mechanism from the winding shaft when a predeterminedamount of thread has been wound on the bobbin, comprising a member movable into and out of acting. position, a lever on which said member is carried, a roll mounted on the le'ver,'a pivoted arm having a curved face substantially concentric with the arc in which the end of the arm swings for engagement withthe roll to maintain said member out of acting position, means for actuating the lever to throw said member into acting position when the roll leaves the curved face on said arm, a second arm connected with the first armto swing therewith, and a contact piece for engagement with the thread on the bobbin carried by the second arm.

FRED ASHWORTHJ. Witnesses:

CHESTER E. Rooms, LAURA M. Goonmnsn.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

